PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-22:43:10
G10     251.7          27.7               14.2 +/-    1.79      26.0 +/-    1.79  0.030 / 0.050
G13     52.3           29.0                8.6 +/-    0.83      15.3 +/-    0.83  0.030 / 0.060
G15     89.6           59.1                9.1 +/-    0.52      10.4 +/-    0.52  0.130 / 0.540
G16     292.7          16.0                9.3 +/-    3.22      22.7 +/-    3.22  0.150 / 0.560
G20     255.8          22.1               12.7 +/-    0.94      26.6 +/-    0.94  0.050 / 0.150
G21     333.8          60.3                8.0 +/-    0.51       9.0 +/-    0.51  0.070 / 0.170
G26     265.0          15.2               13.4 +/-    2.85      33.1 +/-    2.85  0.030 / 0.040
G29     165.6          49.8                9.7 +/-    0.78      12.3 +/-    0.78  0.030 / 0.050